Doffing device for spinning-machines.



J. P. CRANE.

DOFFING DEVICE FOR SPINNING MACHINES.

APPLICATION FILED MAY I7. I917.

Patented Jan. 8, 1918i 4 SHEETS-SHEET1.

WITNESS:

I N VEN TOR, la/uw 172/22: R 'rane ATTORNEY.

J. P. CRANE.

DOFFING DEVICE FOR SPINNING MACHINES.

APPLICATION FILED MAY, 1917.

Patented Jan. 8, 1918.

4 SHEETS-SHEET 2 INVENTOR, John P? Qf'rarza,

@Qwv Jw. @ww/ WITNESS:

A TTORNE Y.

J. P. CRANE.

DOFFING DEVICE FOR SPINNING MACHINES. APPLICATION FILED MAYII. 1917.

L252, Patented Jan. 8,1918.

4 SHEETSSHEET 3.

II 2f 27 1;

Q 20 5 /4 a): 3 Z; 22

O Q g 0 II 5 i WITNESS: h IN VEN TOR, W rfiikll 1? mm,

A TTORNE Y.

J. P. CRANE.

DOFFING DEVICE FOR SPINNING MACHINES.

APPLICATION man MAY-17.1917.

Patented Jan. 8, 1918.

4 SHEETSSHEET 4- W] TNESS; INVENTOR,

w John Crane,

A TTORNEY.

D STA DOFFING DEVICE FOR SPINNING-MACHINES.

Specification of Letters Patent.

1 Patented Jan. 8, 1918.

Application filed May 17, 1917. Serial No. 169,233. v

To all whom it may concern:

Be it known that I, JOHN P. CRANE, a citizen of the United States ofAmerica, residing in Indian Orchard, in'the county of Hampden and Stateof Massachusetts,have invented certain new and useful Improvements inDoifing Devices for Spinning-Machines, of which the following is aspecification.

This invention relates to improvements in attachments to spinningmachines, such attachments being known as dofiing devices forsimultaneously removing all of the filled bobbins from the spindles andfor simultaneously replacing all of the empty bobbins orspools on thewinding spindles. A common practice, at the present time, is to manuallyremove the filled bobbins, one by one from the spindles, which operationnecessitates shutting down the machine for a considerable period, notonly while the filled bobbins are being removed but also while the emptybobbins are being put in place on the spindles.

My invention, broadly considered, comprises a frame work which extendsthe length of the machine and is adapted to be operated by suitablemeans, preferably located at one end of the machine for removing thefilled bobbins. This framework includes a bar formed with openings,which bar is designed to be slipped down over the filled bobbins and isprovided with suitable means for engaging or gripping the bobbins tosimultaneously effect the lifting of all of them free from the spindlesand into a position that is out of the path of the empty bobbins, whichat this point, in the operation, are lowered past the filled bobbins andinto position on the driving spindles. Suitable devices are provided forsimultaneously releasing all of the filled bobbins, permitting the sameto fall by gravity into a suitable receptacle. The apparatus which isused to place the empty bobbins is first raised into its initialposition after the operation of removing the filled bobbins has takenplace.

Referring to the drawings:

Figure l is a side elevational view showing the two frames for removingthe filled bobbins and for replacing the empty ones, with means foroperating the same during the removal and filling operations;

Fig. 2 is an end elevational view of Fig. 1 looking from the right ofthis figure and showing the devices for operating the frame whichremoves the filled bobbins and the cords which control the frame andwhich carry the empty bobbins Fig. 3 is an enlarged end elevational viewlooking from the left of F 1, as indicated by the arrow and clearlyshowing the rack' and pinion construction which is operated by the handwheel that controls the up and down movements of the frame for takingoff the filled bob-bins, and also the hand wheel which controls themovements of the frame for lowering the empty bobbins into place on thespindles; 1 Fig. 4 is a partial transverse sectional View on the line4-l of Fig; 1 showing the position of the attachments'before'the filledbobbins are removed and before the empty bobbins are lowered, alsoillustrating one hand wheel for operating the cableswhich controlsthemeans for replacing the empty bobbins; i

Fig. 5 is a view similar to Fig. 4 showing the bobbin removing frameafter it has just been lowered to engage the filled bobbin; the grippingdevices for engaging'the filled bobbins being shown in contacttherewith; Fig. 6 is a'view similar to Fig. 4 and which might properlybe'termed the third position in the operation of removing the filledbobbins,which shows the filled bobbins swinging intothe dotted lineposition Fig. 7 illustrates the position of the empty bobbins after theyhave been lowe'red into engagement with thespindles and the positionthat the bobbin-releasing device assumes to free the filled bobbins fromthe bobbin removing frame; F

Fig. 8 is a detail end view of a portion of the shaft which supports thebobbin-removing frame and illustrating the hexagonal nut in sectionwhich is engaged by a wrench, or other device for operating the shaftfor swinging the filled bobbins intothe position shown in Fig. 6 andprior to the removal, as shown in Fig. 7; i

Fig. 9is a detail view of the rail or rod which carries the clips whichtemporarily retain the empty spindles in place.

Referring to the drawings in detail: land 2 designate the 'end frames ofthe machine which are provided with the slidable racks 3 and twhich aremovable up and-down as willbe described. These-racks are engaged by thepinions 5 and 6 that are mounted on rection of rotation of the wheel 10.

the ends of a transversely located shaft 7 the center portion of whichis provided with a spiral thread 8, which thread is engaged by a spiralgear 9, whereby when the hand wheel 10 is operated the shaft 7 will bero-' tated causing the pinions to raise or lower the racks 3 and 4,depending upon the diracks are the bars 14 having the openings 15 themanually operable levers 16 and movtherein. Normally, or while thethread is being wound on the bobbins, these bars are held in an elevatedposition as shown in Figs. 2, 3, and 4. Attached to these bars are ableby the levers is the rod 17 which carries the fingers 18 which engagethe filled bobbin. The bars 14 are attached to movable links 19 by meansof the brackets .20. The upper ends of the links 19 are pivotallyconnected to a shaft or rod 21 that extends longitudinally of themachine as shown clearly 111 Fig. 1, 1n S1ClOGlGVZItIOI1, and 111 Figs.2, 3, 4, in end vlew.

I shafts travel up and down in the longitudi- 'nal openings 22 of theend frames, when step is to disengage the filled bobbins 23 removing thefilledbobbins or lowering'th'e bobbin removing frame. iVhen it isdesired to remove thefilled bobbins, which are inclicated in Figs. 4 and5 at 23, the operator rocated in Fig. 5.

the lever 16 toward the right causing the tates the hand wheel 10causing the racks 3 and 4 to descend, which carry the bars 14 therewith.The openings 15 in the bars l4 pass down over the filled bobbins, asindi- The operator then moves fingers 18. to engage the filled bobbin,as shown in Fig. 6. The operator now moves the lever. 16 to bring thefingers 18 into contact with the threads of the filled bobbins Upon therotation of to grip the same. the hand wheel 10 in the oppositedirection the bar 14 will be elevated carrying with it all of the filledbobbins 23' as indicated in Fig. 6. After the bobbins have been elevatedabove the spindles 24, the operator now moves the bar 14 outward byapplying a wrench or other implement to the nut 24 on the end of theshaft 21, from the position shown in Fig. 6 to that shown in Fig. 7

in which position the bar is held or supported. by means of the link 25which is connected to the link 19, this link 25 is placed by theoperator in a socket in the plate 26, as shown. The next 'step in theoperation is replacing the empty bobbins or spools on the spindles 24and this is accomplished as followszThe operator places the emptybobbins, as shownin Figs. 3, 4, and 5, in the These then downward overthe rollers 33'fan'd 34.

and the. winding drums 55 and 36' which are located, as shown in Fig. 1,at the op-- posite ends of the machine. These drums 35 and 36are-operated. by the hand wheel 37- by means of the longitudinally:arranged connecting shaft 38. As the'hand wheel 37 is rotated the empty'spcolsor bobbins arelowered in position to slip on to the windingspindles 24 (see Fig. 7), ,It will be noticed that the dru1ns'31 areconnected to shafts 31 whichextend through the endframes 1 and- 2 and tothe inner ends of which drums 31. are attached. j A V In order to freethebobbins 27 from the spring clips 28 after the empty bobbins have beenplaced on the spindles 24 the operatorpulls outward on the rod 29 in thedirection of the arrow 31, as shown in the dotted line position 29, Fig.7, thereby freeing all of the empty bobbins from this rod. Thenext fromthe bobbin removing bar 14. This is accomplished by the operator pullingtoward the left on the lever 16, v(Fig. 7 whereby the fingers 18 aresimultaneously disengaged from the filled bobbinallowing them to fallinto the receptacle 39,shown inFig. 7.

Itshould be stated that after the. rod 29 is freedfrom the empty bobbinsthe hand wheel 37 is again operated and the rodis drawn upward to itsinitial position in'the' upper part of the machine. The racks and 4are-also n iove d upward into the position shown in Fi 3 whlchplaces themready for the next operation ofremoving' the filled'bobbin as alreadydescribed.

The usual drawing rollers are indicated in Figs. 4 and 5, at 40, fromwhich extends the threads tothe bobbins being wound.

The steps or positions maybe summed up as follows: first, that shown inFig. 4 where the bobbins are. filled. The bobbins are filled readv to beremoved, the bobbin re-' moving rall beingin elevated position asf',

shown in this figure. In the second position the rail 14511518been'lowered as shown'in operator now; operates thehand wheels 10causing all ofthe filled bobbins to be drawn 1 upward above the spindle24, nextthe op.

erator rotates the shaft 21 by means of a wrench or other implementwhich is placed on the nut end 24:, and swings'the bar 14 and the filledbobbins to the dotted line position where it is temporarily elevateduntil the empty bobbins are .placed on the spindlesQt. In the fourthposition the operator rotates the hand wheel 37 for lowering the bobbins27 into the position shown in Fig. 7, then he pulls outward on the rod29 freeing the bobbins from the spring clips 28. The rod 29 is thendrawn upward again into its initial position for the operator to fillthe spring clips 28 with empty bobbins. Next the operator moves thelever 16 outward thus releasing the gripping fingers 18 from the filledbobbins whereby they will fall into a receptacle 89 which is placedalong the side of the machine. The braces 25 are then released and theframe drawn upward again into the position shown in Fig. 4 where it isready for the next operation of doflin the filled bobbins.

What I claim is:

1. In a doffing device for spinning frames the combination with avertically movable bar formed with openings therein to receive thefilled bobbins, means for moving the bar to cause the openings thereinto pass over the filled bobbins, means for gripping the bobbins when thebar is in this position, means for elevating the bar and bobbin as aunit, devices for swinging the bar and bobbins outward to a positionbeyond the plane of the end of the frame of the machine prior todisengaging the bobbins, a bar provided with spring clips fortemporarily receiving the empty bobbins, means for lowering this barpositioning the empty bobbins on the spindles, the empty bobbins beingreleased from the bar by an outward pull thereon, and means fordisengaging the filled bobbins from the first mentioned bobbin receivingbar, as described.

2. In a dofiing device for spinning frames for removing the filledbobbins and for replacing the empty bobbins, said device com prising abar formed with openings therethrough for receiving the filled bobbins,

means for gripping the filled bobbins, devices for elevating the bar andbobbin into a position above the winding spindles, means for moving thefilled bar and bobbins in a lateral direction away from the verticalaxis of the winding spindles to permit an empty bobbin holder to belowered in position on the spindles, means for supporting the emptybobbins, and means for raising and lowering said empty bobbin-supportingmeans.

8. In a dofling device the combination with the end frames of thespinning machine, recesses in the ends of the frame,

secured to the racks for raising and lowering the bar into a positionover the filled bobbins, means on the bar for gripping the filledbobbins to effect their removal from the spindles when the bars areelevated, and means for releasing the filled bobbins when the grippingmeans is moved in an opposite direction, as described.

at. In a spinning frame, the combination with the spindles thereof, ofmeans for placing the empty bobbins on the spindles, including a barprovided with spring clips for releasably holding the empty bobbins inplace thereon, a shaft extending longitudinally of the machine andhaving cable winding drums on its ends, cables extending from the drumsand connected to the empty bobbin-supporting bar, whereby when the shaftis operated the empty bobbins will be lowered into position for placingempty bobbins on the winding spindles, said bobbins being simultaneouslyremoved from the clips by a pull in a direction transverse to the axisof the winding spindles.

5. In a dofiing device the combination with a spinning frame, the endplates of which are formed with longitudinal openings, racks in theopenings, a shaft secured to the racks and traveling therewith andhaving its ends formed with a projection to receive a suitable implementfor rotating the shaft, a link secured to the shaft, a bobbin receivingbar secured to the link and formed with openings therein and designed toslip over the filled bobbins, means engaging the rack for elevating thebobbins and removing them from the spindles, the rotation of said shaftserving to move the bobbins to a position beyond the plane of the endframes, and means for releasing the filled bobbins, comprising grippingfingers for engaging the filled bobbins.

6. In combination with the winding spindles of a spinning frame, ofmeans for replacing the empty bobbins on said spindles, comprisinga bar,spring clips secured thereto for temporarily receiving the emptybobbins, cables secured to said bar, drums located on the inside of theend frames, and to which the cables are secured, shafts secured to saiddrums and arranged near the top of the end frames, drums on the outerends of the shaft, cables secured to the drums and secured to a windingdrum, whereby the empty bobbins can be lowered by the operation of thewinding drums and into a position to permit the empty bobbins to beplaced on the spindles, said clips permitting the bobbins to be removedtherefrom when moved in a direction transversely to the machine.

7. In a device for holding the empty bobbins in a spinning machine priorto placing them on the winding spindles and comprising a member to whichclips are secured the clips having a' throat portion that is narrowerthan the seat-receiving portion to permit their insertion, and to permittheir removal when the member is moved in a direction that is transverseto the machine, means for raising and lowering the bar, comprisingwinding drums and cables which Ccpies of this patent may be obtained forfive cents each, by addressing the Com Washington, D. C. v

are attached to the bar, said cables permitting the bar to be swungoutward after the empty bobbins have been placed on the windingspindles, whereby the empty bobbins are disengaged fromthe bar andpositioned on the winding spindles. V I

JOHN P. CRANE.

nission er of Patents,

